Calk-machine.



A. PFEIFFER.

-CA|.K MACHINE.

APPLICATION HLED FEB. 12. 1916.

Patented July 4, 1916.

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ADAM PIEEIFFER, or GNApENH-UTTEN, oHIo.

CALK-MAGI-IINE.

Specification of Letters Patent.

Patented July 4, 1916.

Application filed February i2, 1916. Serial a... 77,975.

T 0 all whom it may concern Be it known that I, ADAM Prnirrnn, a citizen of the United States, residing at Gnadenhutten, in the county of Tuscarawas and State of Ohio, have invented certain new and useful Improvements in Call:- Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to machines for forming calks on horse shoes; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed whereby the stationary die may be adjusted so as to form calks of different size.

In the drawings, Figure 1 is a side view of a portion of a calk machine constructed according to this invention. Fig. 2 is a front View of the same. Fig. 3 is a crosssection, taken on the line 22-00 in Fig. 2, and showing portions of the mechanism drawn to a larger scale.

The calk machine is provided with a supporting frame or standard 2, and a block 3 is arranged to project upwardly at the front part of the frame. An adjustable clamping plate 4: is mounted on the block 3 and has a die 5 on its rear side for forming the calks. A clamping plate 6 is pivoted to the upper ends of two bars 27 which slide in grooves in the block 3, and are provided with any approved means for operating them. The clamping plate 6 is arranged over the clamping plate f so as to clamp the horse shoe against it. Any other approved means may however be used for clamping the horse shoe against the plate 4 while the calk is being formed.

A roller or calk-former 7 is mounted in a slide 8 which is slidable vertically in guides in the frame 2, and which is provided with any approved operating devices, such as those shown in Patent No. 1,032,703. The calk-former 7 works behind the die 5, and the calk is formed by the descending roller which turns over the calk against the die while the shoe is clamped between the plates 4 and 6.

In order to enable calks of different size to be made by the same die, two vertical pins 10 are arranged to slide in holes in the block 3, under the front portion of the die plate or clamping plate 6, and when these pins are raised the die plate is tilted to the position shown in full lines in Fig. 3, so that the cutting-off edge or projection of the die is lowered and a thinner calk is formed.

A recess 12 is formed in the frame around the bottom end portions of the pins 10, and a rock-shaft 14 is mounted in bearings 15 which are secured to the front side of the frame. Arms 16 are secured on'this rockshaft and project under the bottom ends of the pins 10, and work in the recess 12. A lever 17 is secured on one end portion of the rock-shaft 1 1, and projects rearwardly and downwardly at one side of the machine frame.

A hand operating lever 18 is pivoted to the machine frame by a pin 19, and works under the end of the lever 17, or under a roller 21 on the end of it. A toothed rack 22 is secured to the frame, and engages with the hand lever so that it and the rock-shaft may be held in any desired position. The hand lever is sprung laterally out of engagement with the toothed rack, in operating the device, and any other approved locking device or catch besides the toothed rack may be used for holding the hand lever and the die in position. The die is moved to the position shown in full lines in Fig. 3 by raising the hand lever.

What I claim is:

1. In a calk machine, a supporting frame, a slidable calk-former, a die mounted in the frame in front of the calk-former, and means for tilting the said die so that calks of different sizes may be formed against it by the calk-former.

2. In a calk machine, a supporting frame, a slidable calk-former, a clamping plate mounted in the frame and having a die at its rear end, means for clamping the shoe against the said plate, and means for raising the front end of the plate so as to tilt it and move the said die downwardly and thereby permit the calk-former to form a thinner calk against it.

3. In a calk machine, a supporting frame, a slidable calk-former, a die mounted in the frame in front of the'calk-former, a rockshaft pivoted to the frame and provided with means for oscillating it, arms projecting rearwardly from the rock-shaft, and slidable pins arranged between the said arms and the front end portion of the die plate.

4. In a ealk machine, a supporting frame, a slid-able calk-fermer, a die mounted in the frame in front of the (talk-former, a rockshaft pivoted to the frame, lifting devices arranged between the rock-shaft and the front end portion of the die plate, a lever secured to the rock-shaft, a hand lever piv- Oopica 0! thin patent may be obtained (or five cent: each, by addressing the comminioner of Iatcnts,

ADAM PFEiFFER.

Washington, D. G." 

